Toner concentrate Kodak Professional Rapid Selenium Toner 946 ml for black-and-white darkroom prints

Kodak Professional Rapid Selenium Toner is a 946 ml concentrate designed for selenium toning of silver-based black-and-white darkroom prints. Formulated to be diluted before use, this toner alters image tone and enhances the archival stability of gelatin silver prints. It is intended for use in finishing stages of darkroom workflows where controlled toning and improved longevity of prints are required.

Advantages

The concentrated formula allows precise dilution to achieve a range of selenium toning effects, from subtle shifts in image neutrality to stronger sepia or cool selenium tones. Selenium toning produced by this product increases resistance to environmental degradation and can help neutralize remaining sulfides, improving print permanence. As a professional-grade chemistry from a recognized photographic manufacturer, the toner integrates into standard darkroom processing routines and supports repeatable results when used according to instructions.

Suitable for

• Gelatin silver black-and-white enlargements and contact prints
• Archival or exhibition prints requiring enhanced longevity
• Darkroom finishing workflows where controlled tonal adjustment is desired

Key specifications

• Form: Liquid concentrate intended for dilution
• Volume: 946 ml concentrate container
• Application: Selenium toning of silver-based black-and-white prints
• Compatibility: Designed for traditional darkroom gelatin silver papers
• Effect: Alters image tone and enhances archival stability

How to use

Dilute the concentrate according to the manufacturer’s instructions for the desired toning strength and working temperature. After fixing and thorough washing of the print to remove residual fixer, immerse the print in the diluted selenium toner and monitor the tonal change visually; development of the final tone may continue during rinsing. Once the preferred tone is reached, stop the toning by rinsing the print in running water or a stop bath as recommended, then proceed with final washing and drying. Always follow safety, ventilation, and handling guidelines for photographic chemicals.

Usage recommendations

Perform test strips or trial prints to determine the appropriate dilution and development time for your paper type and desired tone. Use protective gloves and work in a well-ventilated area. Dispose of spent solutions according to local regulations for photographic chemistry.